external/bsd/bind/dist/lib/dns/rdata/generic/sshfp_44.c

   1 /*      $NetBSD: sshfp_44.c,v 1.6 2014/12/10 04:37:59 christos Exp $    */
   2
   3 /*
   4  * Copyright (C) 2004, 2006, 2007, 2009, 2011-2013  Internet Systems Consortium, Inc. ("ISC")
   5  * Copyright (C) 2003  Internet Software Consortium.
   6  *
   7  * Permission to use, copy, modify, and/or distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice appear in all copies.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  12  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  13  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  14  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  15  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  16  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  17  * PERFORMANCE OF THIS SOFTWARE.
  18  */
  19
  20 /* Id */
  21
  22 /* RFC 4255 */
  23
  24 #ifndef RDATA_GENERIC_SSHFP_44_C
  25 #define RDATA_GENERIC_SSHFP_44_C
  26
  27 #define RRTYPE_SSHFP_ATTRIBUTES (0)
  28
  29 static inline isc_result_t
  30 fromtext_sshfp(ARGS_FROMTEXT) {
  31         isc_token_t token;
  32
  33         REQUIRE(type == 44);
  34
  35         UNUSED(type);
  36         UNUSED(rdclass);
  37         UNUSED(origin);
  38         UNUSED(options);
  39         UNUSED(callbacks);
  40
  41         /*
  42          * Algorithm.
  43          */
  44         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  45                                       ISC_FALSE));
  46         if (token.value.as_ulong > 0xffU)
  47                 RETTOK(ISC_R_RANGE);
  48         RETERR(uint8_tobuffer(token.value.as_ulong, target));
  49
  50         /*
  51          * Digest type.
  52          */
  53         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  54                                       ISC_FALSE));
  55         if (token.value.as_ulong > 0xffU)
  56                 RETTOK(ISC_R_RANGE);
  57         RETERR(uint8_tobuffer(token.value.as_ulong, target));
  58
  59         /*
  60          * Digest.
  61          */
  62         return (isc_hex_tobuffer(lexer, target, -1));
  63 }
  64
  65 static inline isc_result_t
  66 totext_sshfp(ARGS_TOTEXT) {
  67         isc_region_t sr;
  68         char buf[sizeof("64000 ")];
  69         unsigned int n;
  70
  71         REQUIRE(rdata->type == 44);
  72         REQUIRE(rdata->length != 0);
  73
  74         UNUSED(tctx);
  75
  76         dns_rdata_toregion(rdata, &sr);
  77
  78         /*
  79          * Algorithm.
  80          */
  81         n = uint8_fromregion(&sr);
  82         isc_region_consume(&sr, 1);
  83         sprintf(buf, "%u ", n);
  84         RETERR(str_totext(buf, target));
  85
  86         /*
  87          * Digest type.
  88          */
  89         n = uint8_fromregion(&sr);
  90         isc_region_consume(&sr, 1);
  91         sprintf(buf, "%u", n);
  92         RETERR(str_totext(buf, target));
  93
  94         /*
  95          * Digest.
  96          */
  97         if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
  98                 RETERR(str_totext(" (", target));
  99         RETERR(str_totext(tctx->linebreak, target));
 100         if (tctx->width == 0) /* No splitting */
 101                 RETERR(isc_hex_totext(&sr, 0, "", target));
 102         else
 103                 RETERR(isc_hex_totext(&sr, tctx->width - 2,
 104                                       tctx->linebreak, target));
 105         if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
 106                 RETERR(str_totext(" )", target));
 107         return (ISC_R_SUCCESS);
 108 }
 109
 110 static inline isc_result_t
 111 fromwire_sshfp(ARGS_FROMWIRE) {
 112         isc_region_t sr;
 113
 114         REQUIRE(type == 44);
 115
 116         UNUSED(type);
 117         UNUSED(rdclass);
 118         UNUSED(dctx);
 119         UNUSED(options);
 120
 121         isc_buffer_activeregion(source, &sr);
 122         if (sr.length < 4)
 123                 return (ISC_R_UNEXPECTEDEND);
 124
 125         isc_buffer_forward(source, sr.length);
 126         return (mem_tobuffer(target, sr.base, sr.length));
 127 }
 128
 129 static inline isc_result_t
 130 towire_sshfp(ARGS_TOWIRE) {
 131         isc_region_t sr;
 132
 133         REQUIRE(rdata->type == 44);
 134         REQUIRE(rdata->length != 0);
 135
 136         UNUSED(cctx);
 137
 138         dns_rdata_toregion(rdata, &sr);
 139         return (mem_tobuffer(target, sr.base, sr.length));
 140 }
 141
 142 static inline int
 143 compare_sshfp(ARGS_COMPARE) {
 144         isc_region_t r1;
 145         isc_region_t r2;
 146
 147         REQUIRE(rdata1->type == rdata2->type);
 148         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 149         REQUIRE(rdata1->type == 44);
 150         REQUIRE(rdata1->length != 0);
 151         REQUIRE(rdata2->length != 0);
 152
 153         dns_rdata_toregion(rdata1, &r1);
 154         dns_rdata_toregion(rdata2, &r2);
 155         return (isc_region_compare(&r1, &r2));
 156 }
 157
 158 static inline isc_result_t
 159 fromstruct_sshfp(ARGS_FROMSTRUCT) {
 160         dns_rdata_sshfp_t *sshfp = source;
 161
 162         REQUIRE(type == 44);
 163         REQUIRE(source != NULL);
 164         REQUIRE(sshfp->common.rdtype == type);
 165         REQUIRE(sshfp->common.rdclass == rdclass);
 166
 167         UNUSED(type);
 168         UNUSED(rdclass);
 169
 170         RETERR(uint8_tobuffer(sshfp->algorithm, target));
 171         RETERR(uint8_tobuffer(sshfp->digest_type, target));
 172
 173         return (mem_tobuffer(target, sshfp->digest, sshfp->length));
 174 }
 175
 176 static inline isc_result_t
 177 tostruct_sshfp(ARGS_TOSTRUCT) {
 178         dns_rdata_sshfp_t *sshfp = target;
 179         isc_region_t region;
 180
 181         REQUIRE(rdata->type == 44);
 182         REQUIRE(target != NULL);
 183         REQUIRE(rdata->length != 0);
 184
 185         sshfp->common.rdclass = rdata->rdclass;
 186         sshfp->common.rdtype = rdata->type;
 187         ISC_LINK_INIT(&sshfp->common, link);
 188
 189         dns_rdata_toregion(rdata, &region);
 190
 191         sshfp->algorithm = uint8_fromregion(&region);
 192         isc_region_consume(&region, 1);
 193         sshfp->digest_type = uint8_fromregion(&region);
 194         isc_region_consume(&region, 1);
 195         sshfp->length = region.length;
 196
 197         sshfp->digest = mem_maybedup(mctx, region.base, region.length);
 198         if (sshfp->digest == NULL)
 199                 return (ISC_R_NOMEMORY);
 200
 201         sshfp->mctx = mctx;
 202         return (ISC_R_SUCCESS);
 203 }
 204
 205 static inline void
 206 freestruct_sshfp(ARGS_FREESTRUCT) {
 207         dns_rdata_sshfp_t *sshfp = source;
 208
 209         REQUIRE(sshfp != NULL);
 210         REQUIRE(sshfp->common.rdtype == 44);
 211
 212         if (sshfp->mctx == NULL)
 213                 return;
 214
 215         if (sshfp->digest != NULL)
 216                 isc_mem_free(sshfp->mctx, sshfp->digest);
 217         sshfp->mctx = NULL;
 218 }
 219
 220 static inline isc_result_t
 221 additionaldata_sshfp(ARGS_ADDLDATA) {
 222         REQUIRE(rdata->type == 44);
 223
 224         UNUSED(rdata);
 225         UNUSED(add);
 226         UNUSED(arg);
 227
 228         return (ISC_R_SUCCESS);
 229 }
 230
 231 static inline isc_result_t
 232 digest_sshfp(ARGS_DIGEST) {
 233         isc_region_t r;
 234
 235         REQUIRE(rdata->type == 44);
 236
 237         dns_rdata_toregion(rdata, &r);
 238
 239         return ((digest)(arg, &r));
 240 }
 241
 242 static inline isc_boolean_t
 243 checkowner_sshfp(ARGS_CHECKOWNER) {
 244
 245         REQUIRE(type == 44);
 246
 247         UNUSED(name);
 248         UNUSED(type);
 249         UNUSED(rdclass);
 250         UNUSED(wildcard);
 251
 252         return (ISC_TRUE);
 253 }
 254
 255 static inline isc_boolean_t
 256 checknames_sshfp(ARGS_CHECKNAMES) {
 257
 258         REQUIRE(rdata->type == 44);
 259
 260         UNUSED(rdata);
 261         UNUSED(owner);
 262         UNUSED(bad);
 263
 264         return (ISC_TRUE);
 265 }
 266
 267 static inline int
 268 casecompare_sshfp(ARGS_COMPARE) {
 269         return (compare_sshfp(rdata1, rdata2));
 270 }
 271
 272 #endif  /* RDATA_GENERIC_SSHFP_44_C */